Commercial ancestry DNA testing kits, such as those available via 23 and Me and similar companies, are more popular than ever, partially due to their low cost and users' desire to see where their families came from.
After taking the tests, users often share information online with each other, tracking down relatives users may not have known they had; learning vital genetic information about themselves and each other; and in some cases, such as this case reported by The Inquisitr, finding out that their own immediate family makeup is different than what they thought.
However, there are a couple of downsides to the industry that aren't mentioned in the commercials. For starters, users may not realize that their genetic information, which they willingly pay for the privilege of giving away, effectively becomes the property of the testing service they used. And, that information may be sold to third parties or given to law enforcement. In fact, more than one crime has been solved thanks to commercial ancestry DNA testing.